The Polar bottle has the best insulation of any of the soft sided bottles, but there are some stainless steel vacuum jobs that do way better but they're a little more difficult to get the fluid out while riding at the same time. When I lived in the Mojave Desert of California I could ride with 3 Polar bottles in 90 plus degree weather with all 3 bottles spending 24 hours in the freezer with one of the bottles I froze with my drink in the bottle for 24 hours, right before I left the house I would take the 2nd bottle out of the freezer and was then filled with chop ice and packed down till no more ice would go in then I would pour chilled drink into it, the take the third bottle out of the freezer and filled it with regular size ice cubes and poured chilled drink into it The bottle with just the ice cubes stayed cold for an hour to an hour and half, that's cold not cool, the second bottle would last about another hour and half, then the last bottle would last another hour and be nice and cold, so the last bottle would survive with the drink at least cool for 4 hours. But buy either the all white one or the platinum one, the other colors are darker and will absorb more heat into the bottle. These bottles are heavier than other bottles, especially the 24 ounce so they can jump out of your water bottle cages if the cages are not strong. I never had any problems with Bontrager RL, Lezyne Alloy, or Chris King Stainless, I'm sure there are others that up to the task but those are the ones I used that worked.
There is a product called Maxchill which I've never used because it wasn't invented yet when I lived in the Mojave Desert, but wrap the Maxchill around a bottle then soak it with water, the foam is thin enough to fit into a cage. You can re-wet anytime your on a ride too.
http://www.maxchill.com/Home.html
Shoe wise Sidi makes wide versions called Mega as does Shimano, Lake, Northwave, and Specialized. Also Louis Garneau makes a shoe called the CFS-150 that Performance sells that you stick the shoes in the oven at 150 degrees for I think 5 minutes but obviously read the instructions, then while they're warm you put them on and let them mold to your feet. They are remoldable as often as you like, and they will remold to wide feet, problem feet, flat feet, high arch feet, etc.